I don't rule it out. The prior era of "reddit alternatives" in the Voat era was quickly overrun too even though they were very small. The key to the internet has always been first mover advantage. If they have enough power to manipulate the top sites, it would take very little to hedge bets on budding platforms. They risk losing their advantage if a replacement platform establishes itself without them. That's pretty much the whole history of modern tech. To actively seek and snuff out your competitors.